Update at 2:55 p.m.: Jason Jones has been ruled out following his knee injury.

LANDOVER, Md. -- Detroit Lions starting defensive end Jason Jones was carted off the field during Sunday's game against the Washington Redskins and a possible return has been ruled out.

He suffered the injury midway through the second quarter on a Robert Griffin III 12-yard pass to tight end Jordan Reed. He initially stood, but required assistance from staff to limp off the field.

Right guard Larry Warford was then waved onto the field to assist, before a medical cart was rolled out to get him off the field.

Washington scored its lone touchdown of the first half five plays later, a 30-yard run that Alfred Morris bounced to the side of the field normally occupied by Jones.

With Jones out, Israel Idonije is his primary option on the left side and Willie Young also can play the position.

Jones has battled knee pain throughout the year, including missing chucks of training camp and receiving regular days off during in-season practices. But that's his right knee, so the injuries are not believed to be related.

He also was placed on injured reserve in December of last season with torn cartridge in a knee, although which knee isn't clear.